Topics

1

Parallel Port breakout boards, motherboards, and dedicated accessories / 107 Pin Options

« on: December 30, 2022, 10:35:29 AM »

Hi, Two Questions;  If I can configure my 107 and Huanyang GT VFD to work in "Run/Direction" mode, can I use Port 1 Pin 14 for something else?  On Table 1 (pg 9) of the "PMDX-107 Manual" a reference is made to J8 ("direction determined by J8"), which I can not find? Thanks Edward

2

Parallel Port breakout boards, motherboards, and dedicated accessories / PMDX 126 limits/pogo

« on: February 21, 2016, 02:31:07 PM »

I am planning to try some spring pins (pogo pins) for my XYZ home switches. Can the machine frame be used as a negative conductor for a spring pin connected to the 126 input terminals (normally open config).... Or does this ground need to be isolated? 

Some Arduino applications use a resistor in a loop to the terminal and just short out the circuit with the pin to ground (machine frame). Is this better, or better yet does anyone have a proven method that has been used successfully.  I could also run an additional isolated ground from the board to the pin landing if needed? Thanks